docs: def get_send_command(self, send):
  		"""Internal helper function to get command that's really sent
  		"""
  		shutit_global.shutit_global_object.yield_to_draw()
  		if send is None:
  			return send
  		cmd_arr = send.split()
  		if cmd_arr and cmd_arr[0] in ('md5sum','sed','head'):
  			newcmd = self.get_command(cmd_arr[0])
  			send = send.replace(cmd_arr[0],newcmd)
  		return send